VO2 max
VO2 max
VO2 max (pronounced "V-O-two max"), also known as maximum oxygen uptake, is the measurement of the maximum amount of oxygen a person can utilize during intense exercise. It is a common metric used to establish the aerobic endurance of an individual before or during the course of training.
Etymology
The term "VO2 max" is derived from V (volume) O2 (oxygen) max (maximum). It was first used in the field of exercise physiology in the early 20th century.
Definition
VO2 max is defined as the highest rate at which oxygen can be taken in and used by the body during exercise. It is measured in milliliters of oxygen used in one minute per kilogram of body weight (ml/kg/min).
Measurement
VO2 max is typically measured using incremental exercise testing on a treadmill or cycle ergometer. The test begins at a light intensity and gets progressively harder until the subject cannot continue, at which point their VO2 max is recorded.
Factors affecting VO2 max
Several factors can affect a person's VO2 max, including age, sex, altitude, and physical conditioning. Training can improve VO2 max, and it is generally higher in people who regularly perform aerobic exercise.
Related terms
- Aerobic capacity: Another term for VO2 max.
- Anaerobic threshold: The exercise intensity at which lactic acid starts to accumulate in the blood stream.
- Cardiorespiratory fitness: A measure of the health and fitness of the heart and lungs, often assessed by VO2 max.
External links
- Medical encyclopedia article on VO2 max
- Wikipedia's article - VO2 max
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